Where can I take a selfie with kangaroos in Australia?

It depends on how close you intend on getting for your selfies. If you insist on approaching closely, I would only do so in a controlled environment. If you're willing to have your selfie with the kangaroos a dozen or more metres in the background, you'll be fine.

As to where you're able to do so, just about every major town or tourist location has some location where you can get close to kangaroos - patting or hand feeding, either of which would allow selfie opportunities. Some examples include:

• Sydney has Taronga Zoo (free roaming kangaroo area) and Featherdale Wildlife Park
• Melbourne
• Brisbane
• Cairns and Kuranda
• Alice Springs
• Even the Whitsundays

Searching specifically for whereever you may be visiting would almost undoubtedly find somewhere, as all international airports and ports would have somewhere within an hour or less.

Of course, you could just go golfing.

Mareeba Golf Course. Credit: Sweetwater Lodge

Yamba Golf Course. Credit: Shelley Street Beach House

Anglesea Golf Course. Credit: Anglesea Golf Club

The Cairns Tropical Zoo has a Kangaroo enclosure:

Spend time in our kangaroo area. Around 60 tame Eastern Grey kangaroos spend their day meeting visitors, eating from your hand and lazing in the heat of the day.

I can confirm that they will let you get relatively close if they are in the right mood, but not necessarily for the kind of "hugging" selfie you'd take with a human.

The Lone Pine Koala Sanctuary in Brisbane also has a kangaroo enclosure where you can hand-feed kangaroos, including (according to their website) Red Kangaroos and Eastern Grey Kangaroos. I visited many years ago and can confirm that they will eat out of your hand; however, selfies were not a thing then, and so I didn't try to take one.

If you are traveling to Melbourne, I recommend you visit Healesville Sanctuary, it's about an hour east of Melbourne, they have Kangaroo's they are quite used to people.

http://www.zoo.org.au/healesville/animals

I went to the Featherdale Wildlife Park outside of Sydney when I was about 16. It was great and plenty of exotic(by my standards) animals running around that could be fed and touched. However, I don't recall any kangaroos that were free roaming in the park, I think they were all in enclosed spaces, but plenty of small wallabies running around like goons.

Featherdale in Sydney has wallabies and possibly roos. Bonorong, just outside Hobart, has both. In fact, they give you a bag of food for them upon entry. They seem to be very people friendly and don't mind you petting them.

Cleland Wildlife Park in Adelaide has tame Kangaroos for selfies.